12+7C=103

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Solution for 12+7C=103 equation: 


Simplifying
12 + 7C = 103

Solving
12 + 7C = 103

Solving for variable 'C'.

Move all terms containing C to the left, all other terms to the right.

Add '-12' to each side of the equation.
12 + -12 + 7C = 103 + -12

Combine like terms: 12 + -12 = 0
0 + 7C = 103 + -12
7C = 103 + -12

Combine like terms: 103 + -12 = 91
7C = 91

Divide each side by '7'.
C = 13

Simplifying
C = 13

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